Hydroxypropyl methylcellulose (HPMC)Filimi ifite imikorere myiza cyane, ariko kubera ko HPMC ari gel ishyushye, ubushyuhe ku bushyuhe buri hasi cyane, butuma idakwirakwira (cyangwa kuyishyira mu mazi) no kuyumisha ku bushyuhe buri hasi kugira ngo itegure filme iribwa, bigatuma itunganywa nabi; byongeye kandi, igiciro cyayo kiri hejuru kigabanya ikoreshwa ryayo. Hydroxypropyl starch (HPS) ni gel ikonje ihendutse, kuyishyiramo bishobora kongera ubushyuhe bwa HPMC ku bushyuhe buri hasi, kunoza imikorere ya HPMC, no kugabanya ikiguzi cyo kuyikora, kandi, ubushyuhe bumwe, glucose units n'amatsinda ya hydroxypropyl byose bigira uruhare mu kunoza imikoranire y'izi polymer ebyiri. Kubwibyo, sisitemu yo kuvanga gel ikonje ishyushye yateguwe hakoreshejwe HPS na HPMC, kandi ingaruka z'ubushyuhe ku miterere ya gel ya sisitemu yo kuvanga gel ikonje ishyushye ya HPMC / HPS yigwaga ku buryo bunonosoye hakoreshejwe uburyo bwa rheometer na tekiniki nto zo gukwirakwiza X-ray. , hamwe n'ingaruka z'imiterere y'ubushyuhe ku miterere mito n'imiterere ya sisitemu y'urukiramende, hanyuma byubaka isano iri hagati y'imiterere ya gel y'imiterere ya sisitemu y'urukiramende-urukiramende mu miterere y'ubushyuhe.
Ibisubizo bigaragaza ko iyo ubushyuhe buri hejuru, gel ifiteHPMCIbikubiye muri byo bifite modulus nyinshi kandi bifite imiterere isa n’iy’ingirabuzimafatizo, imiterere isa n’iy’ingirabuzimafatizo za gel ni nini cyane, kandi ingano y’ibice bya gel ni nini; ku bushyuhe buke, ingano ya HPS Ingero nyinshi za gel zifite modulus nyinshi, imiterere isa n’iy’ingirabuzimafatizo zigaragara cyane, n’imiterere isa n’iy’ingirabuzimafatizo za gel. Ku bipimo bifite ikigereranyo kimwe cyo kuvanga, imiterere ya modulus n’iy’ingirabuzimafatizo hamwe n’imiterere isa n’iy’ingirabuzimafatizo za gel zigenzurwa na HPMC ku bushyuhe bwinshi iri hejuru kurusha izigenzurwa na HPS ku bushyuhe buke. Ubushyuhe bwo kumisha bushobora kugira ingaruka ku miterere ya gel mbere yo kumisha, hanyuma bukagira ingaruka ku miterere ya crystalline n’imiterere idahinduka ya filime, kandi amaherezo bukagira ingaruka zikomeye ku miterere ya mashini ya filime, bigatuma imbaraga zo gukurura na modulus ya filime yumye ku bushyuhe bwinshi. Iruta iyo yumye ku bushyuhe buke. Igipimo cyo gukonjesha nta ngaruka kigaragara kigira ku miterere ya crystalline ya sisitemu, ariko bigira ingaruka ku bucucike bw’umubiri wa filime usa n’iy’ingirabuzimafatizo za microdomain. Muri ubu buryo, ubucucike bw'imiterere isa ya firime bushobora kugira ingaruka ku miterere ya firime. Imikorere yayo igira ingaruka zikomeye.
Hashingiwe ku itegurwa ry'urukiramende ruvanze, ubushakashatsi bwagaragaje ko ikoreshwa rya ayode mu gusiga irangi ry'urukiramende ruvanze rwa HPMC/HPS byashyizeho uburyo bushya bwo kureba neza ikwirakwizwa ry'urukiramende ruvanze n'impinduka z'urukiramende hifashishijwe mikorosikopi. Uburyo bufite akamaro kanini mu kwiga ikwirakwizwa ry'urukiramende rushingiye ku gifu. Hakoreshejwe ubu buryo bushya bw'ubushakashatsi, buhujwe na spectroscopy ya infrared, scanning electron microscopy na extensometer, ihinduka ry'urukiramende, uburinganire n'imiterere ya mekanike bya sisitemu byarasesenguwe kandi byigwa, kandi isano iri hagati y'imikorere, ihinduka ry'urukiramende n'isura ya filime byarakozwe. Ibisubizo byo kwitegereza mikorosikopi bigaragaza ko sisitemu inyura mu mpinduka z'urukiramende iyo igipimo cya HPS ari 50%, kandi ikintu cyo kuvanga hagati y'urukiramende kiri muri filime, bigaragaza ko sisitemu ifite urwego runaka rwo guhuza; isesengura rya infrared, thermogravimetric n'ibisubizo bya SEM byemeza cyane ivanga. Sisitemu ifite urwego runaka rwo guhuza. Uburyo filime ivanze ihinduka iyo ibikubiye muri HPS ari 50%. IyoHPSIbikubiye muri urwo rugero birenga 50%, inguni y’aho icyitegererezo cyavanzwe iratandukanye n’umurongo ugororotse uhuza inguni z’aho icyitegererezo cyavanzwe, kandi iyo iri munsi ya 50%, iratandukana nabi n’uyu murongo ugororotse. , ahanini biterwa n’impinduka z’icyiciro.
Igihe cyo kohereza ubutumwa: 25 Mata 2024